Suggested in https://reviews.llvm.org/D118493#3402001
I'm happy with this but agree that "what might be a system path?" is a tricky heuristic. What we want is to exclude the places that the application will search anyway, but that's OS dependent. I'm mostly worried about toolchains installed under /opt or under $HOME so this is good for me. It's also easy to pull later if we reconsider.
Thank you for being considerate the use case. But I don't think we should base the decision on whether /usr/lib or /usr/lib64 is used and make directories different. We should unconditionally disable rpath, regardless of the directory path.